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APIs.guru vs eNanoMapper database

Same instrument, two spec sheets — measured, not claimed.

APIAPIs.guruHEALTHY97eNanoMapper databaseHEALTHY79
Uptime · 30d
Uptime · 90d100%99.02%
Uptime · 30d100%100%
P50 · ms2661601
P95 · ms14213310
Authnonenone
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree and open, no keyFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

APIs.guru vs eNanoMapper database: common questions

Which is more reliable, APIs.guru or eNanoMapper database?

On our scheduled checks, APIs.guru leads on measured uptime — APIs.guru at 100% versus eNanoMapper database at 99.02% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Which is faster, APIs.guru or eNanoMapper database?

APIs.guru has the lower median latency in our checks — APIs.guru responds in 266 ms versus eNanoMapper database at 1601 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.

Do APIs.guru and eNanoMapper database need an API key?

Neither needs a paid key — APIs.guru is callable with no signup, and eNanoMapper database is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call APIs.guru and eNanoMapper database from the browser?

Only APIs.guru is browser-friendly — it returns CORS headers over HTTPS. eNanoMapper database needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are APIs.guru and eNanoMapper database free for commercial use?

APIs.guru has unclear commercial terms, and eNanoMapper database has unclear commercial terms. We track service terms and the data license as separate fields — see the Commercial use and Data license rows above, and confirm both before shipping either in a paid product.